DataGate - Business Hosting

Home About Us Contact Support Careers Resellers Customer Login

Dedicated Servers Exchange Hosting Business Hosting Managed Services Share Point E-commerce VPS

Shared Business Hosting

Exchange Hosting

Internet Resources

Getting Started

Firewall Configuration Guide

· Create a new Exchange account

· Connecting to the Exchange server

· Tips for faster connections

· Create a new Exchange user mailbox

· Migration from Outlook Express to Outlook

Public Folders

Outlook 2003

Outlook 2000

Using the Control Panel

Dedicated Servers

Firewall Configuration Guide

In order to connect with MAPI client (such as Outlook) to the DataGate Exchange service through a local firewall, certain ports have to be opened up on your firewall. Here is the list of ports which should be opened for an outbound traffic FROM your subnet TO the DataGate Exchange server:

25 (TCP) SMTP

53 (TCP+UDP) DNS

80 (TCP) HTTP

88 (TCP+UDP) Kerberos authentication

110 (TCP) POP3

143 (TCP) IMAP

135 (TCP) Remote Procedure Call

389 (TCP+UDP) LDAP

445 (TCP) SMB

4930-4935 (TCP) Global Catalog lookups & MAPI

3268 (TCP) LDAP to Global Catalog Servers

Also, if you plan to use SSL to connect, you will need the following ports:

443 (TCP) secure HTTP

465 (TCP) secure SMTP

636 (TCP) secure LDA

993 (TCP) secure IMAP

995 (TCP) secure POP3

Our Exchange network subnet is:-

For Exchange 2003 - 62.204.35.208- 62.204.35.224

In the other direction (inbound to your network), from our Exchange server to your subnet, it would be best to open all traffic, as Outlook client listens to Exchange server on dynamic ports, above 1024.